JPH012839A - lathe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) In the field of industrial application, the invention relates to a method for feeding a long tool such as a polling bar to a tool post without manual intervention.

(b) Problems to be Solved Normally, in a lathe, tools used for machining are manually placed on the tool post.

To provide absolutely nothing.

A tool to be used for machining is selected from a tool magazine in which a large number of tools are stored, and the tool is supplied to the tool post using an ATC arm or the like. However, conventional tool machining machines and ATC arms have the disadvantage of being unable to feed long tools to the turret without passing through a human hair, as there is a limit to the length of the tool that can be handled. .

In view of the above circumstances, an object of the present invention is to provide a lathe that can store long tools around the headstock and supply the stored tools to the tool rest without manual intervention. do.

(C) Means for solving the first problem, that is, the present invention provides a double-layered long tool storage means (10, 35b) around the headstock (2). 26
) is mounted on the main shaft (2, j) (7) axis (CTi), and the tool (26) can be stored with the held part (26a) facing 2@positive direction: sunken. Be configured.

Please note that numbers in brackets are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the description of the drawings. r (d
), the same applies to the "effect" column.

(d) 8 Effects Due to the above-described configuration, 1. During machining, the tool rest (27) is used as the held part (26a) of the tool (26) stored in the long tool storage means (10, 35b). and in that state, directly insert the tool (26) into the tool rest (2).
7).

(e), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front sectional view showing an embodiment of a lathe according to the present invention.

Fig. 2 is a side view showing the main parts of the tool storage device in Fig. 1, Fig. 3 is a view taken in the direction of arrow R in Fig. 1, and Fig. 4 is a plan view showing the gripper portion of the tool storage device No. 1121. 5 is a diagram showing the engagement relationship between the gripper and the lock release cylinder shown in FIG. FIG. 7 is a diagram showing another embodiment of the lathe according to the present invention.

The lathe 1 has a headstock 2 as shown in Fig. 2, and the headstock 2 is provided with a main spindle 2a that can be rotated freely in the directions of arrows A and B around its axis CTI. ing.

A chuck 2b is attached to the main spindle 2a, and a chuck 2b is attached to the main shaft 12A and the cane in a shape t' capable of rotating in the directions of arrows A and B. A tool storage device 3 is provided on the main spindle 2a.

The tool storage device 3 includes a support 51, a rotating drum 6, a tool holding device 10, an index motor 15, and a delivery cylinder 17'. , 7b, the rotary drum 6 formed in a cylindrical shape moves its axis CT2 in the direction of arrow C-D (i.e., ZIP11), which is the axis CTL direction of the main shaft 2a.
direction), and is rotatably rotated in the directions of arrows E and F about the axis CT2.

A linear guide 9 is provided on the outer peripheral surface 6a of the rotating drum 6 in FIG.
There are six (however, only two are shown in FIG. 1).

), are provided at 60° pitch intervals in the circumferential direction of the rotating drum 6 (i.e., in the direction of arrows E and F), and each linear guide 9 is provided extending in the direction of arrow C1D (i.e., in the Z-axis direction). It has a rail 9a and nuts 9b supported movably in the Z-axis direction along the rail 9a. Also.

The rotary tram 6 has six tool holding devices 10, each of which is movable in the Z-axis direction along a rail 9a via a series of nuts 9b, 9b each fixed to a supporting member 11 constituting the holding device 10. , and tool holding devices 10, which are provided so as to be able to rotate together with the rotating drum 6 in the directions of arrows E and F, and which are arranged on one circumference, include a gripper 12, 12 and a tool lock, respectively, in addition to the support member 11. It has a device L3 and the like.

As shown in FIG. It has a claw part 12a and fixing parts 12b, 12b. The claw portion 12a is connected to fixed portions L2b and 12b fixed to the support member 11, as shown in FIGS. 4 and 5.
The claw portion 12a is provided with a
As shown in FIG. 2, the tool holding surface 12c is formed in the shape of a circular arc. In addition, the gripper 12 shown on the left side of FIG.
As shown in FIG. 2, a clamp pin 12d is provided in the claw portion 12a of each gripper 12 in such a manner that it projects inward from the tool holding surface 12c, and a hole 12e is provided in the claw portion L2a of each gripper 12. However, the rear end 13 of the lock lever L3a, which will be described later, is
It is perforated in the form opposite to j. In addition, each support part it
Engagement grooves Lla are formed in the right end portion of t in FIG. 1 in the directions of arrows E and F, respectively.

In addition, 1, l[-The tool locking device 13 constituting the holding device 10 has lock levers 13a, L3a, shirt l-13
As shown in FIG.
VJ is provided rotatably in the directions of arrows G and H through c.
ing. Furthermore, the rear end 13 of the lock lever 13a in FIG.
A spring 13d is fitted into the hole 12e between the hole 12e formed in the claw portion 12a of the gripper 12, and the lock lever 13a is always held in place by the spring 13d. 13 c is biased in the direction of arrow H. Also.

Java: -13b is the supporting member 1 as shown in FIG.
1 is supported movably in the direction of arrow C1D (Z-axis direction) via brackets 1 to 13e, 13k, and 131, and furthermore, at a predetermined position on shaft 13b,
Engagement blocks 1; 3f and 13f are provided in such a manner that they can come into and out of contact with the tip 13i of the lock lever 13a described above. Note that a spring 13h is provided between the retaining block 13r on the left side of FIG.

The shaft 13b is biased in the direction of arrow C together with the engagement blocks 13f, 13f. Furthermore, the spring 13
h, the stopper 13g provided at the right end of the shirt I-13b in the figure is also urged in the direction of arrow C via the shaft 13b, and as a result, the stopper 13g is
Bracket 1; 31 is attached, and further the bracket 131 is attached.
is pressed in the direction of arrow C.

Further, the rotary drum 6 shown in FIG. 1 includes an index motor 15, a boss portion 6b of the rotary drum 6, and a reduction gear train consisting of a plurality of gears connected to the boss portion 6b.
16, and the index motor 15
By starting the rotation appropriately, the drum 6 can be rotated by an arbitrary angle in the direction of the arrow E or F via the reduction gear train 16 or the like.

Also, tool storage system v! As shown in FIG. 1, the feeding cylinder 17 constituting t3 is provided at a position corresponding to the tool feeding position Direction (Z
It is supported in such a manner that it can freely protrude and retract by a predetermined stroke L1 in the axial direction).

An engagement member 17b is provided at the tip of the rod 17a in the figure.

Engagement groove 1 bored in support member 11 of tool holding device 10
1. It is provided in a shape that can be fitted into the a.

Furthermore, the cover 19 constituting the tool storage device 3 is provided in a form that covers the one-rotation drum 6, the tool holding device 10, etc., as shown in FIG. 1, and the cover 19 has an opening/closing portion L9a. As shown in Fig. 6, the tool feeding position x1
The tool holder 10 is opened to the outside so that the tool holder 10 can be sent out of the cover 19 together with the tool 26. Further, the opening/closing rod 20 constituting the tool storage device 3 passes through the rotating drum 6 shown in FIG.
, F directions, and a door 21 (see FIG. 6) is provided at the left end of the opening/closing rod 20 in the arrow E and F directions. Further, at the right end of the opening/closing rod 2o in FIG.
A lever 23 is fixed to the door opening/closing cylinder 22 shown in FIG. A rod 22a supported so as to protrude and retract in the J direction is pivotally attached via a connecting member 25.

Note that the lock release cylinder 2 constituting the tool storage device 3
9 was positioned at the tool delivery position x1, as shown in FIG. Stopper 1 constituting tool holding device 10
From 3g, a predetermined distance titL in the direction of arrow C (Z@positive direction)
The lock release cylinder 29 has a cylinder 29a. cylinder 29
A piston 29b is fitted into the inside of the interior so as to be movable in the directions of arrows C and D (in the direction of the Z axis).
A piston loft 2≦]C is fixed to the piston loft so that it can protrude and retract in the X-axis direction. Note that oil supply holes 29d and 29Q are bored in the cylinder 29a in a round shape to supply pressure oil into the cylinder 29a.
A pressure oil supply and supply device (not shown) is connected to d and 29e.

Moreover, the positioning disk 30 that constitutes the tool storage device 3 is
As shown in FIG. 1, the axis is the axis C of the rotating drum 6.
As shown in FIG. 2, a circular outer circumferential portion 30a is formed on the first positioning disk 30, which is fixed to the support base 5 in a manner consistent with T2. Note that a cutout portion 30b is provided in a portion of the outer circumferential portion 30a corresponding to the tool feed-out position x1 in a direction perpendicular to the plane of the paper in the figure. Further, at the right end in FIG. 1 of the support member 11 constituting each tool holding device 10, there are provided 9 positioning members 31 each having a cross-sectional shape. is perforated in the direction perpendicular to the plane of the paper in the figure. Note that, as shown in FIG. 2, the first positioning member 31 has a notch 3 of the first positioning disc 30 in its groove 31a, except for the position 3 where it is positioned at the tool feeding position X1.
(The outer peripheral portion 30a other than 2b is fitted, and the IQ positioning disk 30 is used in the direction perpendicular to the plane of the paper in the figure (i.e.).

movement in the X-axis direction) is restricted. Further, when the 1-positioning Xh member 31 is positioned at the tool feeding position You will get it.

Furthermore, number 1! On the left side of vI, a turret-type tool rest 27 constituting the lathe 1 is placed in the L direction (
In other words, it is provided in such a way that it can be freely moved and driven in the X-axis direction.
The tool rest 27 is provided with a plurality of tool holding parts 27a in a form that can open in the direction indicated by the arrow, which is the Z-axis angular direction.

Since the lathe Xt has one or more configurations, using the lathe 1, a long worker 26 such as a boring bar etc. To perform boring or the like using the , first, each tool holding device 10 is placed along the axis CT1 of the main spindle 2a and at the tapered shank portion 26at! , Zflll positive direction (i.e., the first
The tool is selected from among the tools 26 stored in a blow shape and indexed to the tool feeding position x1.To do this, the index motor 15 shown in FIG. 1 is driven. , the one-rotation drum 6 is rotated by a predetermined angle in the direction of arrow E or F together with each tool holding device 10 via the reduction gear train 16, boss portion 6b, etc. At this time, each tool holding device 10 As shown in FIG. 2, the grooves 31 of the positioning members 31 provided in the support members 11
Since it rotates in the direction of arrow E or F while slidingly contacting the outer circumferential portion 30a of the positioning disc 30 through a, there is no possibility that it will move in the direction of arrows C and D (in the direction of Z@hole) during the rotation. Please perform the indexing work smoothly.

In this way, when each tool holding device 10 turns by a predetermined angle in the direction of arrow E or F, the tool holding device 10 holding the tool 26 used for machining is positioned at the tool feeding position 1RX1. Further, at this time, the support member 11 constituting the tool holding device 10 also turns by a predetermined angle in the direction of the arrow E or F together with the first positioning member 31, and is positioned at the tool delivery position x1. Then, the engaging member 17 provided on the rod L7a of the delivery cylinder 17 shown by the solid line in FIG.
b is inserted, and the positioning member 31 is aligned with the notch 30b of the positioning disc 30 shown in FIG. As a result, the positioning member 31 can move in the X-axis direction, which is a direction perpendicular to the plane of the drawing, through the notch 30b, and Restrictions on movement will be lifted.

Next, in this state, the door opening/closing cylinder 22 shown in FIG. 3 is driven to move the rod 22a back together with the connecting member 25 in the direction of arrow J, and position it at the position shown by the solid line in FIG. Then, the opening/closing opening 20 is pulled by the rod 22a in the direction of the arrow J through the connecting member 25 and the lever 23, and rotates by a predetermined angle in the direction of the arrow E.

Then, the door 21 shown in the sixth @ provided in the opening/closing lot 20 is also rotated by a predetermined angle 1Fj1 in the direction of arrow E from the position shown by the imaginary line in the figure, and is positioned at the position shown by the solid line in the figure. The opening/closing part 19a is opened.

When the opening/closing portion 19a is opened, the feed cylinder 17 shown in FIG. direction) by a predetermined stroke L1. Then, the tool holding device 10 holding the boring tool 26 is moved from the position indicated by the solid line in FIG. Predetermined pressure in the direction! Move only LL,
(d) The tool is positioned at the tool exchange position x2. In addition.

At this time, the hole 26b drilled in the tool 26 (see Figure 2)
A clamp pin 12d provided on the claw portion 1.2a of the gripper 12 is fitted into the clamp pin 12d, which restricts the movement of the varnish 26 in the directions of arrows C and D (Z-axis direction).
6 will not fly out from the tool holding device 10 in the direction of arrow C and the holding relationship will be canceled.

In this way, the tool 26 is moved in the direction of the arrow C1D (the Z-axis) in the direction of the arrow C1D (the turret 27 shown in the first image is shown in the imaginary world in the figure). Direction) Furthermore, as shown in FIG. 1, a tool holding portion 27a capable of holding a boring tool 26 provided on the tool rest 27 is moved appropriately in the L direction in the direction of the arrow in FIG. The tool 26
It is positioned at a position facing the tapered shank portion 26a. In this state, the tool rest 27 is moved along with the tool holder 27a by a predetermined distance in the arrow direction (i.e., z1m negative direction) in FIG.
The tapered shank portion 26a of No. 6 is held. At this time, the taper shank portion 26a is positioned at the tool change position x2 that protrudes from the headstock 2 by a predetermined distance in the direction of the arrow C, which is the positive direction of the Z field, so that the tool rest 27 and the headstock 2! The tool holding portion 27a is not
The holding operation of the tool 26 is carried out smoothly.

Next, in that state, the lock release cylinder 2 shown in FIG.
Supply pressure oil to the oil supply hole 29d of No.9.

The piston rod 29c is made to protrude in the direction of the arrow through the piston 21b. Then, Binuton rod 29
C comes into contact with a stopper 13g provided on the shaft 13b of the tool locking device 13, which is shown by line a in FIG. 1, and further presses the stopper 13g in the direction of the arrow. Then, the shaft 13b moves in the direction of the arrow along with the engagement blocks 13f shown in FIG. 4 against the elasticity of the spring 13h. When each engagement block 13f moves in the direction of the arrow, the abutting relationship between the engagement block 13f and the tip 13i of the lock lever 138 is released.

The restriction on movement of the lock lever 13a in the direction of arrow G is released.

Next, in this state, the tool rest 27 is moved by a predetermined pressure mL3 in the direction of the arrow in FIG. Then.

The tool 26 held in the E tool holding portion 27a of the tool rest 27
is also moved by a predetermined pressure t#L3 in the direction of the arrow, and the holding relationship with the tool holding device 10 is released.

At this time, since the restriction on movement of the lock lever 1:ia shown in FIG. 2 in the direction of arrow G is released, the lock lever 13a moves as the tool 26 moves in the direction of the arrow.
It rotates around the pin 13e in the direction of arrow G against the elasticity of the spring 13d.

As a result, the movement of the tool 26 in the direction of the arrow is not hindered by the lock lever 13a.

From the tool holding device 10 to the tool holding part of the tool rest 27,
27a, the tool 26 is transferred to the receiver without any problem.

In this way, when the tool 2S is supplied to the tool rest 27, the tool rest 27 is transferred to the first tool rest 27 along with the boring tool 26.
Move the tool 26 by a predetermined distance in the direction of arrow C in the figure, and
It is pulled out to the outside of the tool storage device @3 through the opening/closing part 19a of the cover 19.

Note that when the tool 26 has been extracted to the outside of the tool number MA device 3, the feed cylinder 11 is driven to move the rod 17a together with the engaging member 1.7b from the position shown by the imaginary line in FIG. In the direction of the arrow (i.e.

2 axis negative direction) by a predetermined stroke L1. Then, the empty tool holding device 10 is moved to its supporting member 1.
1 by the engagement member 17b through the engagement member 1311a, it moves a predetermined distance L1 in the arrow direction (Z-axis angular direction) and is moved and retracted to the position shown by the solid line in FIG. Then, in that state.

The door opening/closing cylinder 22 shown in FIG. 3 is moved to project the loft 22a together with the connecting member 25 in the direction of the arrow F, and the opening/closing rod 20 is rotated by a predetermined angle in the direction of the arrow F via the lever 23. Then, the door 21 (see FIG. 6) provided on the opening/closing rod 20 moves in the direction of arrow F from the position shown by the solid line in the figure and is positioned at the position shown by the imaginary line in the figure, and the cover 19 is opened and closed. The portion 19a is closed, and each tool holding device 10, rotating drum 6, etc. are isolated from the outside. Furthermore, in this state, the tool rest 27 and the tool 26
By moving the tool 26 by a predetermined distance in the direction indicated by the arrow in FIG.

In this state, the workpiece is rotated by rotating the ball shaft 2a shown in FIG. 1 in the direction of arrow A or B.

The chuck 2b is rotated simultaneously in the direction of the arrow A or b, and the tool rest 27 is rotated a predetermined distance in the arrow direction (i.e., Z@negative direction) in FIG. By moving only the row, a predetermined boring force 11 is applied to the workpiece.

After the workpiece has been bored, move the tool post 27 a predetermined distance in the direction of arrow C in Figure 1 (i.e., 2@positive direction) and use the boring tool such as a boring bar. Take the tool 26 out of the workpiece, and in that state move the main spindle 2a (
Therefore, the rotation of the workpiece) in the direction of arrow A or B is stopped.

Then, the workpiece is removed from the chuck 2b and first,
The workpiece to be machined is attached to the chuck 2b. Note that when a tool 26 different from the boring tool 2G attached to the tool post 27 is used to process the workpiece attached to the chuck 2b, the tool must be replaced. First, the door opening/closing cylinder 22 is driven to move the rod 22a backward in the direction of arrow C in FIG. 1, thereby rotating the opening/closing rod 20 in the direction of arrow E. Then, the door 21 shown in FIG. 6 is rotated in the direction of arrow E from the position indicated by aX in FIG.

Next, in this state, the cylinder 1 is fed out as shown in FIG.
7 to project the rod l 7a together with the engagement member L7b from the position shown by the solid line in the figure by a predetermined stroke L1 in the direction of arrow C (positive direction of the two axes), thereby removing the empty tool holder M10. It is moved in the direction of arrow C (Z-axis stop direction) and positioned at tool exchange position x2. In this way, when the tool holding device 10 is positioned at the tool exchange position [X2, the tool rest 27 is moved to the tool
6, move a predetermined distance in the direction of the arrow in FIG.
The tool 26 is positioned a predetermined distance, %1tL3, from the tool exchange position X2 in the direction of the arrow. (@negative direction) by a predetermined distance 9 Then,
The tool 26 is positioned in the tool storage device 3 via the opening/closing portion 19a of the cover 19 at a position facing the gripper 12.12 constituting the tool holding device [10].

Next, move the tool rest 27 a predetermined distance dL in the direction of the arrow in FIG.
When the tool 2 [3 is moved by 3, the tool 2 [3] moves in the direction of the arrow and comes into contact with the tip L3i of the lock lever 13a that is provided as a pair with the gripper 12 shown in FIG. The tip portion 131 is moved in the direction of the arrow while being pushed out in the direction of the rotating drum 6 against the elasticity of the spring 13d. Then, the Ts tool 26 is the gripper 12
A hole 26 is made in contact with the tool holding surface 12'c of the claw part 12a and the fixing part 12b, and is bored in the outer peripheral surface of the tool 26.
The clamp bottle 12d is fitted into the hole b. Next, in this state, by supplying pressure oil into the cylinder 29a from the oil supply hole 29e that constitutes the lock release cylinder 29 shown in FIG. 5, the piston rod 2De is retreated in the direction of arrow C together with the piston 29b. . Then, tool lock device 1
The shaft L3b constituting the shaft L3b moves in the direction of arrow C by the elastic force of the spring 13h while suppressing the piston rod 29c via the stopper 13g until the rod 13g contacts the bracket 131. Then, the engagement blocks 13f, 1 provided on the shaft 13b
3f also moves 8 times in the direction of arrow C to engage the tip 131 of the lock lever 13a and press the tip 13i in the direction of the tool 26.

In this way, the tool 26 is attached to the gripper 12 and the lock lever.
13a etc., the holding relationship between the tool 26 and the tool holding portion 27a of the tool rest 27 is released, and further.

The tool rest 27 is retracted to a position a predetermined distance away in the direction of arrow C in FIG. 1 (ie, in the positive direction of the two axes).

Next, in this state, the C-index motor 15 is appropriately driven to rotate the rotary drum 6 along with each tool holding device 1110 by a predetermined angle in the direction of arrow E or F via the X-speed gear train 16. , to 7′! The tool 26 used for DI boring or the like is positioned at the tool delivery position x1.

When the tool 26 is positioned at the tool feeding position Xl, as described above, the feeding cylinder 17 is used to position the tool 26 at the tool changing position x2, and the retracted tool rest 27 is moved. The tool 26 is moved to the tool rest 27 by a predetermined distance in the arrow direction (that is, the Z-axis angular direction) together with the tool holder 27a.
The tool 26 is fed and mounted via the chuck 2b, and the workpiece held by the chuck 2b is subjected to boring or the like.

In addition, in the above-described embodiment, a case has been described in which a plurality of tool holding devices 10 as long tool storage means are arranged on the circumference, but the arrangement mode of the long tool storage means is as follows.
Not limited to this, a long tool 26 around the headstock 2
As long as the tools can be directly supplied to the tool rest 27, it goes without saying that they can be arranged in any way. It is also possible to place it on x@36 as shown in . The storage device 35 having the tool storage section 35b will now be described. Note that the same parts as those explained in FIGS. 1 to 6 are given the same reference numerals, and the explanation of those parts will be omitted. .

That is, the tool storage device 35 has a main body 35a, as shown in FIG.

A plurality of tool storage sections 35b are disposed on x@36, which is the movement path of the knife stand 27, and are crowded. Each tool storage section 35b
In this example, a long workpiece M, 26 such as a boring bar, whose axis is parallel to the axis CTI of the main shaft 2, and whose tapered shank portion 26a is placed in the first direction from the main body 35a in a direction perpendicular to the plane of the paper in the figure. It is stored facing in the direction of arrow C in the figure (ie, the Z-axis pressure direction).

Using such a tool storage device 35, the tool 26 can be supplied to the tool rest 27.

The tool holder 27a and the tool holder 27a are appropriately moved along the X-axis 36 in the L direction in the direction of the arrow, so that the tool holder 27a and the long tool 26 used for machining are opposed to each other. Furthermore, in that state,
The tool rest 27 is moved together with the tool holder 27a in the direction indicated by the arrow in FIG. Hold tool 26.

Next, the tool rest 27 is moved along with the held tool 26 by a predetermined distance in the direction of arrow C (Z-axis pressure direction), which is the opposite direction to the arrow direction, and the tool 26 is moved to the tool storage device 35.
from the tool storage section 35b. In this way, when the tool 26 is supplied to the tool rest 27, the corresponding work X26
According to "C, the prescribed boring process is performed.

In order to return the tool 26 from the tool rest 27 to the tool storage device 3, the tool rest 27 and the tool 26 are appropriately moved in the direction of the arrow in FIG. It is made to face the empty tool storage section 3Sb. Next, the tool rest 27 is moved together with the tool A26 toward the tool storage section 35b.

The tool 26 is stored in the tool storage section 35b. In this state, the holding relationship between the tool A26 and the tool post 27 is released. In this way, the tool rest 27 can be prevented from interfering with the headstock 2.
Tools are exchanged between the tool rest 27 and the tool storage device 35.

Furthermore, when the tool post 27 is movable in the Xa, Z-axis direction and the Y-axis direction (direction of arrows M and N in FIG. 7), which is a direction perpendicular to the X-axis and Z-axis directions, each of the above-mentioned Tool storage section 35
It is possible to perform tool exchange using the tool storage device 35A arranged adjacent to the right side surface 2c of the headstock 2 shown in FIG. I can do it.

That is, to exchange tools between the tool storage device 35A and the tool post 27, move the tool post 27 in the direction of arrow K.

■, force direction in the X-axis direction and arrow i, N direction (Yfl
11 direction) as appropriate, and move the tool holding section 27a of the tool rest 27 and the tool storage section 3 of the tool storage device fl 35A.
5b to face each other. In this state, as already mentioned, the tool rest 27 is moved together with the tool holding part 27a in the direction perpendicular to the paper in FIG. The tool 26 is transferred between the parts 35b and 35b.

Replace tools.

(f) 0 Effects of the Invention As described above, according to the non-invention, a plurality of tool holding devices 10. The long tool storage means such as the tool storage section 35b is connected to the long tool Jt, 26 is connected to the main shaft 2a.
Along the axis of the tapered shank portion 2 of the
6a, etc., so that the held part of the tool 26, which is stored in the long tool storage means, is opposed to the held part of the tool 26. , in that state, hold the held part by the tool rest 27 and directly.

The tool 26 can be supplied to the tool post 27.

As a result, the long tool 26 can be stored around the headstock 2 without using an ATC arm that has a limit on the length of the tool that can be handled, and the stored tool 26 can be directly transferred to the tool rest 2.
7 without any human intervention.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an embodiment of a lathe according to the present invention. Figure 2 shows the tool storage in Figure 1! FIG. 2 is a side view showing the main parts of the II device. 3 is a view taken along arrow R in FIG. 1, and FIG. 4 is a plan view showing the gripper portion of the tool storage device in FIG. 1. FIG. 5 is a diagram showing the engagement relationship between the gripper and the lock release cylinder shown in FIG. 4. FIG. 6 is a diagram illustrating how tools are changed using an embodiment of the lathe according to the present invention, and FIG. 7 is a diagram showing another embodiment of the lathe according to the present invention. 1... Lathe 2... Headstock 2a... Main spindle 10... Long tool storage means (tool storage device) 26... Tool 27 ......Turret 35b...Long tool storage means ('T, tool storage tube part 6...XalI CTI...Axis center

Claims (1)

[Scope of Claims] A lathe having a headstock in which a main spindle is rotatably provided and a tool rest movable at least in the X-axis direction, wherein a plurality of long tool storage means are provided around the headstock, A lathe characterized in that a long tool is provided and configured so that it can be stored along the axis of the main spindle and with the held part of the tool facing in the positive direction of the Z-axis.